diff options
| author | Martin Bugge <marbugge@cisco.com> | 2013-12-12 17:10:57 +0400 |
|---|---|---|
| committer | Mauro Carvalho Chehab <m.chehab@samsung.com> | 2014-01-07 12:46:57 +0400 |
| commit | 834a8be1566f6db57a95954cc7bcc9d1e95aa80b (patch) | |
| tree | 20427ea899009ec20880bd8f664b52f2d066fe53 | |
| parent | 15058aac06dc706c549a66f0e254046cbc844b9b (diff) | |
| download | linux-834a8be1566f6db57a95954cc7bcc9d1e95aa80b.tar.xz | |
[media] adv7842: return 0 if no change in s_dv_timings
Return 0 if the new timings are equal to the current timings as
it caused extra cp-loss/lock interrupts.
Signed-off-by: Martin Bugge <marbugge@cisco.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
| -rw-r--r-- | drivers/media/i2c/adv7842.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/media/i2c/adv7842.c b/drivers/media/i2c/adv7842.c index ba748637b7ca..c69711756c8e 100644 --- a/drivers/media/i2c/adv7842.c +++ b/drivers/media/i2c/adv7842.c @@ -1453,6 +1453,11 @@ static int adv7842_s_dv_timings(struct v4l2_subdev *sd, if (state->mode == ADV7842_MODE_SDP) return -ENODATA; + if (v4l2_match_dv_timings(&state->timings, timings, 0)) { + v4l2_dbg(1, debug, sd, "%s: no change\n", __func__); + return 0; + } + bt = &timings->bt; if (!v4l2_valid_dv_timings(timings, adv7842_get_dv_timings_cap(sd), |